Safety system for steam-boilers.



S. RON GERO. SAFETY sysmn FORSTEAM BOILERS.

a APPLICATION men MAYT. 1912.

Patented Oct. 29,1918.

in connection with a steam boiler, the

/of suitable material as wood SERAFIN RGNCER-O, OF FRAMINGHAM, MASSACHUSETTS.

SAFETY SYSTEM FOR STEAllI-BOILEBS.

Specification of Letters Patent.

Patented (let, 2%, 1918.

Application filed May 7, 1917. Serial No. 166,816.

To all whom it may concern:

Be it known that I, SnnAIuN llononno, a citizen of the United States, and a resident of l ramingham, county of Mi(ldlesex,'and State of lvlassachusetts, have invented an Improvement in Safety Systems for Steam- Boilers, of which the following description, in connection with the zu'companying drawings, is a specification, like characters enthe drawings representing like parts.

This invention relates to safety systems for steam boilers and its object is to provide novel means, actingautomaticall tOsCOlltI'Ul the action of the feed water pump to keep the water at a substantially constant, and safe level in the boiler.

Referring to the drawings of the enhodiment of my invention scribed herein:

Figure 1 is a diagrammaticview of one arrangement of the elements of my invention pump controlling means being shown somewhat enlarged for clearness.

illustrated and de- Fig. 2 is a detail of the emergency valvefor drawing water from the boiler in case the usual means fails; and

Fig. 3 is a detail ofthe danger alarm valve for sounding an alarm when the water falls below the danger point.

Referring first to Fig. l, a conventional type of upright steam boiler is represented at 1, which is connected by a pipe 2 with a. feed pump 3 which is actuated with steam supplied with a pipe 1.

For controlling the supply of steam to the pump 3, and consequently the action thereof, T have invented novel means.

The boiler is provided at a suitable point with a valve chamber 5 of suitable material as metal herein of cylindrical type, which is connected with the boiler by a pipe 6 above the normal water line 7 and below the nor mal water line by a pipe 8. Each pipe may be provided with a usual valve 9.

In the valve chamber, Fig. 1, is a float 10 or cork, carr mgat its'npper end a valve stem 11 which "'seats in the lower end of a pipe 12. The

1| valve is normally kept closed With the Water at normal level.

The pipe 12 is supplied with a usual valve 13 and runs to a pipe or cylinder 14 having a stutllng box 15 at one end and carried by any suitable support as 16. This cylinder is shown somewhat enlarged for purpose of clearness.

llithiu the cylinder 14, Fig. 1, is a plunger 1? having a reduced section 18 which is re ceived in a cylinder or pipe 19 also havinga stuffing box-20, and carried by a suitable support as 21, on the base 16 referred to. F or operating the pump I provide a novel means which is as follows:

The steam pipe a is provided with a valve 22 having a seat 23, cover 2% therefor and chamber The cover may be secured to the seat conveniently by bolts 26.

The chamber 25 is connected bya pipe 27 with the steam space of the boiler 1. The

valve chamber contains the valve 22 having a port 28 adapted to register with the port 29 in the seat 23 and thus controls communication with the pipe 4. For operating the valve 22 I provide a rack 30 in mesh with a segmental gear 31 on the rock shaft 32.

The roek-shatt 32 isworked by a togglelike device comprising an arm 33 loosely pivoted to one of herein a pair of levers 84 pivoted, in turn, to a suitable support as a collar on the pipe 27. The opposite ends of the lovers 34 are suitably connected with the plunger 18, as by a pivot'and slot connection with a eross-head thereon. The cylinder 19 is also connected by a pipdBfi with the steam pipe 27. The method of using my inventionis as follows: The normal water line in the boiler is indicatd at 7 and at this point it supports the float 10 and its valve stem in position to close the valve in the pipe 12. If

pipe 12 to the cylinder 14:. The pressure of steam on the end of the plunger will force it outward causmg the togglelevers S4- to rock thcshaft 32 and slide the valve 22 to the right, Fig. 1, so that its port 28 will register with the port 29 in the valve seat.

The opening of the valve permits steam from pipe 27 to How through pipe 4; to the pump 3, actuate it, and force water into the boiler. When the water in the boiler rises to normal level it raises the float 10, closes the valve in pipe 12 and shuts off the supply of steam from that source for the plunger 17 and'pump 3.

\Vhen the pressure of steam on the plunger 17 is thus cut off the pressure of the steam on the opposite end of the plunger 18 supplied bymeans of pipe 36 will force the plunger 17 inwardly again and thereby close the valve 22 and stop the pump.-

In this manner the pump is automatically operated as needed to keep the water at substantially normal level.

As a precaution in case of accident to the foregoing pump controlling means, I pro vide the boiler also with a similar emergency float valve 37, Fig. 2, in a reversed position, the chamber for which is similarly connected with the boiler by pipes 38, 39.

Normally the water does not support this valve and it remains closed. If, however, the water rises to an abnormal level then it opens the valve 37 and permits water .to flow from the boiler through pipe 39 and thus relieve the boiler and permits the valve 37 to again seat itself.

A similar valve alarm 40, Fig. 3, is also provided for the relief of steam pressure. Ordinarily the water will hold the valve 10 closed but if it falls to a dangerous point it will cause the valve to open and thus permit steam to escape by means of pipe 4E1 and blow a whistle, if desired, to att act the attention of the fireman.

lVhile I have shown herein one embodiment of my invention, it. will be obvious that the construction may be modified in many detail respects within the spirit of the invention and scope of the appended claims.

Claims:

1. An automatic water regulator for steam boilers, comprising a. pump having a water connection with the boiler, and also a steam connection with the boiler, a slide valve in said steam connection, actuating means for the valve, and a plurality of steam connections between the boiler and the valveactuating means, one connection providing a constant steam pressure and another connection an intermittent steam pressure.

2. :An automatic water regulator for steam boilers, comprising a. pump having a. water connection with .the boiler, and also a steam connection With the boiler, a slide valve in' said steam connection, actuating means for the valve, a plurality of steam connections between the boiler and the valve actuating means, one connection providing a constant steam pressure and another an intermittent steam pressure, and a valve in one of said steam connections between the boiler and the valve actuating means positively controlling the operation of the valve actuating means in one direction only.

3. An automatic water regulator for steam boilers, comprising a pump having water connection with the boiler, a steam connection also-with the boiler, a slide valve in the steam connection, a two-diameter plunger for actuating the valve and a steam connec tion between the boiler and each of the plunger cylinders, one connection )roviding a constant steam pressure and another an intermittent steam pressure.

4. An automatic waterregulator for steam boilers, con'lprising a pump having water connection with the boiler, a steam connec tion also with the boiler, -a slide valve having a port in the steam connection, normally closed, a two-diameter plunger for actuating the valve, a cylinder for each diameter of the plunger at opposite ends thereof, and aseparate steam connection between the boiler and each cylinder, one connection providing a constant steam pressure and another an in'tern'iittent steam pressure.

5. An automatic water regulator ("or steam boilers, comprising a pump with a water connection with the boiler, a steam connection also with the boiler, a valve in the steam connection, a two-diameter plunger, a case for each diameter of the plunger each having a steam connection with the boiler, slide valve in the steam connection between the pump and boiler and a toggle for actuating said valve.

6. An automatic Water regulator for steam boilers, comprising a pump with a Water connection to the boiler, a steam connection also to the boiler, a valve in the steam connection, a two-diameter plunger, a case -tor each diameter of the plunger having a steam connection with the boiler, means for controlling the action of the valve in the pump steam connection with the boiler by said plunger, a water pipe leading from the boiler, and an automatically operating valve in said pipe adapt-ed to be opened by the water in the boiler upon failure of the valve in the steam connectihn to operate.

7. A feed pump regulator comprising a float chamber, afloat valve therein, a steam connection adapted to connect the float chamber with the pump, a slide valve in said connect-ion, and valve actuating means c0mprising a multi-diameter plunger and connections between the plunger cylinders and the boiler providing varying degrees of pressure on the different plunger diameters.

8. An automaticwater regulator for steam boilers, comprising the pump 3, pipe 2 connecting the same with the boiler, steam pipe 27 lending from the boile Wllillfl'LCk 30 in 4 between the r, slide valve 22 said steam pipe, connection pump' and sald valve, piston vidingconstant, and the providing intermittent stea latter connection In pressure, valve operating members 33, 34 with geztrBl-eon neeting the valve and one of. said pistons, .10

end a float chamber 15 with floait lfl therein connecting the pipe 12 with the boiler.

In testimony whereof, I have signedmy name to this specification.

SERAFIN RONOERO. 

